ICS9147-06 Integrated Circuit Systems, ICS9147-06 Datasheet - Page 2

• Manufacturer Part Number: ICS9147-06
• Description: Frequency Generator & Integrated Buffers
• Manufacturer: Integrated Circuit Systems

3, 10, 18, 24, 30, 32,
7, 15, 21, 25, 34, 48
8, 9, 11, 12, 13, 14,
PIN NUMBER
PD#
38, 39, 41, 42
1
1
1
1
1
1
0
37, 43, 44
1, 2, 47
16, 17
26, 27
22, 23
40, 46
28
29
36
45
33
4
5
6
BUSEN
X
1
1
1
1
1
0
REF1, REF2, REF3
GND
X1
X2
BUS (1:8)
FS (0:1)
VDD3
48M (1:2)
PD#
CPUEN
CPUH
CPU (1:4)
BUSEN
IOAPIC
VDDL
24M
PIN NAME
CPUEN
X
1
1
1
1
0
1
FS1
X
X
X
0
0
1
1
TYPE
PWR
PWR
PWR
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
FS0
X
X
X
14.318 MHz reference clock outputs.
Ground.
Crystal input, has internal crystal load capacitor, and feedback resistor
from X2. Nominally 14.31818MHz.
Crystal output, has internal crystal load capacitor
BUS clock outputs, operates synchronously at CPU/2.
Select pin for enabling CPU and BUS clock frequencies.*
Core and Buffer output clock power supply.
48 MHz clock output
Device power down input, stops outputs low and shuts off crystal
oscillator and PLLs when low.*
Output enable for all CPU clocks, a logic low will Stop low all CPU
clocks.*
3.3 (VDD3 dependent) CPU clock output
CPU clock output clocks, operates at VDDL supply voltage (with
IOAPIC), either nominal 3.3V VDD or reduced voltage 2.9 to 2.5V.
Output enable for all BUS clock, a logic low will stop Low all Bus
clocks.*
IOAPIC clock output. (14.318 MHz), operates at VDDL supply voltage
with CPU (1:4), either nominal 3.3V VDD or reduced voltage
Power supply for CPU and IOAPIC block buffers, operates at nominal
3.3V VDD or reduced voltage 2.9 to 2.5V.
24 MHz clock output
0
1
0
1
2.9 to 2.5V.
CPU (1:4)
Running
Tristate
CPUH
REF/2
LOW
LOW
66.6
60
Running
Tristate
REF/4
LOW
LOW
BUS
33.3
30
DESCRIPTION
14.31818
14.31818
14.31818
14.31818
IOAPIC
Tristate
LOW
REF
REF
Tristate
(MHz)
REF/4
LOW
24
24
24
24
24
Tristate
(MHz)
REF/2
LOW
48
48
48
48
48